H04H 20/36
For am broadcasts
Official title: for AM broadcasts
H04H20/36 (For am broadcasts) appears on 29 US grants and 14 published applications in this corpus.
Search patents in H04H- Granted patents
- 29
- Published applications
- 14
- Assignees
- 18
- Inventors
- 43
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 6 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 0 |
| 2003 | 1 | 4 |
| 2004 | 2 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 1 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
| 2024 | 0 | 0 |
| 2025 | 0 | 2 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for providing radio content to a vehicle using an enhanced AM radio access system24 Feb 2026US 12,562,830 B2Ford Global Technologies, LLC
- Power down workload estimation26 Dec 2023US 11,853,558 B2Micron Technology, Inc.
- Radio information system and method for remote locations6 Mar 2018US 9,912,422 B2Wellfence LLC
- Method and device for transmitting complementary data in an analog radio transmission system30 Aug 2011US 8,009,703 B2Robert Bosch GmbH
- Symbol tracking for AM in-band on-channel radio receivers8 Jun 2010US 7,733,983 B2iBiquity Digital Corporation
- Digital Signal Quality Metric For AM HD Radio Signal23 Jul 2026US 2026/0213863 A1iBiquity Digital Corporation
- System and method for providing radio content to a vehicle using an enhanced am radio access system18 Jun 2026US 2026/0172129 A1Ford Global Technologies, LLC
- Method And System For Synchronizing Audio Transmission In A Single Frequency Network22 May 2025US 2025/0167906 A1iBiquity Digital Corporation
- System and method for providing radio content to a vehicle using an enhanced am radio access system27 Mar 2025US 2025/0105936 A1Ford Global Technologies, LLC
- Power down workload estimation6 Jul 2023US 2023/0214126 A1Micron Technology, Inc.
Most cited
By later US patents
- Alerting device and system for abnormal situations197US 5,572,201 AFederal Signal Corporation · 1996
- AM-compatible digital broadcasting method and system173US 6,005,894 A1999
- Method and apparatus for AM compatible digital broadcasting138US 5,588,022 AXetron Corporation · 1996
- Broadcast system for distribution automation and remote metering129US 4,322,842 AAltran Electronics, Inc. · 1982
- AM compatible digital waveform frame timing recovery and frame synchronous power measurement107US 5,764,706 AUSA Digital Radio Partners, L.P. · 1998